Zhao Yiwei, Gao Liangmin, Zha Fugeng, Chen Xiaoqing, Zhou Xiaofang, Wang Xinfu, Chen Yang, Pan Xiangwei
Department of Environmental Science and Engineering, School of Earth and Environment, Anhui University of Science and Technology, 232001 Huainan, People's Republic of China.
J Environ Health Sci Eng. 2021 Mar 8;19(1):531-540. doi: 10.1007/s40201-021-00625-w. eCollection 2021 Jun.
Due to the special sensitivity of typical ecologically fragile areas, a series of human life, mining, and other activities have a greater impact on the environment. In this study, three coal mines in Ordos City on the Loess Plateau were selected as the study area, and the pollution levels of heavy metals in the area were studied by measuring As, Hg, Cr, Cd, Cu, Ni, and Pb in the soil of 131 sampling points. Combined with the concept of "co-occurrence network" in biology, the level of heavy metals in soil was studied using geostatistics and remote sensing databases. The results showed that the concentrations of Hg, Cr, Ni, Cu, and Pb in more than half of the sampling points were higher than the local environmental background value, but did not exceed the risk control value specified by China, indicating that human factors have a greater influence, while Cd and As elements are mainly affected Soil parent material and human factors influence. Heavy metal elements have nothing to do with clay and silt but have an obvious correlation with gravel. Cd, Pb, As and Ni, Cd, Cr are all positively correlated, and different heavy metals are in space The distribution also reflects the autocorrelation, mainly concentrated in the northeast of the TS mining area and the middle of the PS mining area.
由于典型生态脆弱区的特殊敏感性，一系列人类生活、采矿等活动对环境的影响较大。本研究选取黄土高原鄂尔多斯市的三座煤矿作为研究区域，通过测定131个采样点土壤中的砷、汞、铬、镉、铜、镍和铅，研究了该区域重金属的污染水平。结合生物学中“共现网络”的概念，利用地统计学和遥感数据库研究了土壤中重金属的含量水平。结果表明，一半以上采样点的汞、铬、镍、铜和铅浓度高于当地环境背景值，但未超过中国规定的风险控制值，表明人为因素影响较大，而镉和砷元素主要受土壤母质和人为因素影响。重金属元素与黏土和粉砂无关，但与砾石有明显相关性。镉、铅、砷与镍，镉、铬均呈正相关，不同重金属在空间上的分布也体现出自相关性，主要集中在TS矿区东北部和PS矿区中部。
